What is causing intermittent brake warning light under heavy breaking?

Answer by  DouglasEarlClore (1236)

Low brake fluid, worn shoes or pads, leaking at the wheel or the master cylinder. Air in the brake line.

Answer by  JoetteB (62)

The most common cause of the brake light coming on while braking is low brake fluid. Many auto parts stores will help you check brake fluid levels free of charge.

Answer by  smoore (30)

This has happen to me before and the problem was caused by low brake fluid. Change out your brake fluid and check for leaks around the reservoir and master cylinder.

Answer by  TwoToneDodge (2204)

The car may be running low on break fluid. Check under the hood at the level and if its low it has to be taken to a shop.